T. M. A. International T. M. A. InternationalT. M. A. International

T. M. A. International
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T. M. A. InternationalT. M. A. International
T. M. A. International
T. M. A. International T. M. A. International T. M. A. International T. M. A. International T. M. A. International T. M. A. International




Fair & Exhibition

INDEE - Cairo, 2006
Visit Us
INDEE - Cairo, 2006
November 23 - 26, 2006
Hall No. 3,
Cairo Fair Ground, Cairo


Sintered Bearings and Bushes Bi-metal Bearings and Thrust Washers

Sintered Bearings and Bushes

T. M. A. International T. M. A. International T. M. A. International

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Description of the Product
We Manufacture non-ferrous and ferrous Sintered Metal parts for use in various industries like home appliances, automobiles, business machines, FHP motors etc.

We have the technology and capability to produce a wide range of products such as gears, cams, bearings and other structural part in compositions of iron, nickel, brass and bronze alloys. Our team of experienced designers, tool and die makers and production men are well equipped to undertake new challenges. We can supply with precision parts in a wide range of size, styles and composition at substantial savings.

Our product range in ferrous & non-ferrous material is widely covered that fulfils the need of various industries.

Domestic Appliances :
We manufacture parts in Ferrous & Non Ferrous Materials for domestic appliances like: Bearings for Kitchen Mixers / Food processors / Blenders / Ice cream makers / Washing Machines / Fan etc.

T. M. A. International T. M. A. International

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Automotive components :
Bearings & Parts: We manufacture several parts for Automotive two wheelers, three wheelers, Four wheelers & Agricultural equipment's. We supply directly to OEM's & also suppliers of OEM's. We also undertake conversions of conventional metal parts into Powder Metallurgical Parts

Auto Electrical :
We are having almost all ranges in Ferrous & non Ferrous bearings require for Automobile Starters, Alternators, Dynamo.

Air-Conditioning Machines :
We are supplying a wide range of bearings for coolers and air conditioners for many leading brands in India and abroad.



What is Powder Metallurgy
Powder metallurgy is a method of compacting metal parts from highly pure metal powders compressed to the required shape in a precision die and strengthened by the bonding of the adjacent surfaces of the powder particles under heat and controlled atmosphere in a furnace. Additional features of close tolerance, higher strength reduced porosity, higher densities can be achieved by subsequest operations of sizing, coining, heat treatment and steam treatment.

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How Sintered Metal Parts are Made
In order to correctly determine suitable application, the various steps required in fabrication of sintered parts must be well understood. Selection of proper composition meeting all the specific requirements of the parts must be considered. To maintain consistency and uniformity of initial run and repeat orders the powder mix should be carefully blended to assure proper size control.



Compacting
The blended powder in specified composition is carefully fed into the die with controlled quantity of weight and compressed under desired pressure. The compacted part now has the desired shape and smoothness of the final part. The filling, compaction and ejection operations are generally carried out on automated cycles and a fine balance between efficient production and maximum precision is maintained.

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Sintering
The compacted parts, which are still relatively fragile, are now passed through a conveyer sintering furnace. In sintering the metal powders get bonded to give the required strength. The sintering furnace is heated to a precisely controlled elevated temperature and in suitable atmosphere.

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Sizing
In some applications it is not possible to achieve the required specifications by the basic operations of compaction and sintering. Such parts are designed for a sizing operations of compaction and sintering. Such parts are designed for a sizing operations. The parts are pressed in a sizing die to control the parameters of either density, strength, tolerances, finish or any combination of these.



Quality Control
All necessary inspection tools such as measuring instruments, analytical balances, Shadow graphs, universal testing machines, hardness testers etc. are provided. Specification for every part size are predetermined for each stage of production and are strictly adhered to. Emphasis is on process controlled quality.

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Advantages of Sintered Metal Parts
Powder Metallurgy has unleashed many possibilities in designing and manufacturing of metal parts. This results in a number of advantages over other processes of manufacture.

  • Low cost, high production and closer tolerances.
  • Costly machining operations eliminated. Wherever necessary relatively simple secondary operations are sufficient.
  • Complete absence of material waste, low level of scrap.
  • High degree of uniformity. Close tolerances throughout the batch.
  • Flexibility in choice of compositions not possible by conventional metallurgy, feasible even for non alloying metals.
  • Special characteristics such as self lubrication, controlled porosity for filters, good electrical and magnetic properties achievable to desired levels.
  • Heat treatment and steam treatment possible to achieve desired levels of hardness, pore closure or rust prevention.
  • Highly suitable for mass production from batch sizes of few thousands to few millions.

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Bi-metal Bearings and Thrust Washers

Description of the Product
Company manufactures millions of Plain Shaft Bearings, designed to suit all types of applications with constantly high quality. Companie's expertise has been achieved through manufacturing practices which include CADD/CAM, automatic tooling, pick & place robotics, state of the art machineries and presses ranging from 5 ~ 250 TONNES. These "Best in class" techniques maximize manufacturing effectiveness with consistent quality, integrating them into supply chain process of automobile,tractor, two-wheeler,compressor and various other OEM industries within the country as well as overseas.

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SINTERED COPPER LEAD SINTERED LEADED BRONZE BABBITTS ALUMINIUM SOLID BRONZE
SAE 49 SAE 792 SAE 794 SAE 12 Tin Base Babbitt SAE 13 Lead Base Babbitt SAE 781 Bimetal Clad Silicon Cadmium Solid Phosphor Bronze
Cu - 75%
Sn - 0.5%
Pb - 24%
Cu - 80%
Sn - 10%
Pb - 10%
Cu - 72%
Pb - 23%
Sn - 3%
Sn - 89%
Cu - 3.25%
Sb - 7.5%
Pb - 84%
Sn - 6%
Sb - 10%
Al - 95%
Silicon - 4%
Cadmium - 1.0%
Sn - 6%
P- 0.2%
Zn - 0.2%
Remainder - Cu

  • Valve Rocker Bushings
  • Bushings for various Steering applications.
  • Bushings and Washers made form solid phosphor bronze materials for general applications
  • Bearings for various Comperessors
  • Bushings and Washers for Automatic transmissions
  • Bushings for Tractors, Earthmoving Equipments & other Automotive applications
  • Bushings for various Shock Absorber and Strut applications
  • Bushings for various Hydraulic applications
  • Bushings for various Starter Motor applications
  • Bushings for various FHP Motors
  • Graphite Impregnated Bushings

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Sintered Bearings and Bushes Bi-metal Bearings and Thrust Washers



¤ PRODUCTS RANGE ¤
Ferrous Metal Products
  Flat Products Steel Strips | Cold Rolled Steel Sheets
Galvanized Steel | Perforated Sheet, Wire Mesh & Wedge Wire Screen
Stainless Steel Strips
  Long Products Bars & Shafts | Wires | Forgings Products
Non Ferrous Metal Products
Copper Tubes | Copper & Brass Strips | Aluminium | Cupronickel Tubes | Copper Flats | Copper Rods
Engineering Products
Electric Motors | Capacitors | Bearings & Bushes